Calibrating oxygen abundances for star-forming galaxies
文献类型：期刊论文
| 作者 | Liang, Y. C.1; Yin, S. Y.1,2; Hammer, F.3; Deng, L. C.1; Flores, H.3 |
| 刊名 | ADVANCES IN SPACE RESEARCH
 |
| 出版日期 | 2007 |
| 卷号 | 40期号:5页码:620-624 |
| 关键词 | galaxies abundances calibration SDSS emission-line ratios equivalent width |
| 英文摘要 | We have selected a large sample of star-forming galaxies (104,088) from SDSS-DR4 to derive oxygen abundance calibrations using equivalent width (EW) ratios of three metallicity-sensitive emission-line ratios: [NII]/H alpha, ([OIII]/H beta)/([NII]/H alpha), and [NII]/[SII]. The analytic calibrations of 12 + log(O/H) versus these line-ratios have been obtained as third-order polynomial fits, appropriate for metal-rich galaxies. These observed relations are consistent with photoionization models. These can be used as calibration references for future studies about metallicities of galaxies, especially when there are problems dealing with proper flux calibration for spectra, e.g., some of the current generation of wide-field galaxy surveys that use multi-object spectrographs. (C) 2007 COSPAR. Published by Elsevier Ltd. All rights reserved. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000253589600005 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/7325]  |
| 专题 | 国家天文台_光学天文研究部 |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 2.Hebei Normal Univ, Dept Phys, Shijiazhuang 050016, Peoples R China 3.Observ Paris, GEPI, F-92195 Meudon, France |
| 推荐引用方式 GB/T 7714 | Liang, Y. C.,Yin, S. Y.,Hammer, F.,et al. Calibrating oxygen abundances for star-forming galaxies[J]. ADVANCES IN SPACE RESEARCH,2007,40(5):620-624. |
| APA | Liang, Y. C.,Yin, S. Y.,Hammer, F.,Deng, L. C.,&Flores, H..(2007).Calibrating oxygen abundances for star-forming galaxies.ADVANCES IN SPACE RESEARCH,40(5),620-624. |
| MLA | Liang, Y. C.,et al."Calibrating oxygen abundances for star-forming galaxies".ADVANCES IN SPACE RESEARCH 40.5(2007):620-624. |
入库方式： OAI收割
来源：国家天文台
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